Tilting mechanism for furnaces and the like



TILTING MECHANISM FOR-'IURNACES AND THE LIKE. I

APPLICATION FILED JULY 9.1920.

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J. R. WYATT. TILTING MECHANISM FOR FURNACES AND TH; LIKE.

Patented Oct. 17,1922.

2 SHEETS-SHEET 2.

APPLICATION FILED JULY 9|1920.

.and at the same time Patented Get. 17, 1922.

JAMES R. WYATT, or CAMDEN, NEW

JERSEY, ASSIGNOR TO THE AJAX IVIETAL COM- PANY, OF PHILADELPHIA,PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

TILTING MECHANISM FQR FURNACES AND THE LIKE.

-App1ication filed July 9, 1920. Serial No. 394,893.

To all whom it may concern Be it known that I, JAMES R. WYATT, a citizenof the United States, residing at 1257 Empire Avenue, Camden, in thecounty of Camden and State of New Jersey, have invented a certain newand useful Tiltin Mechanism for Furnaces and the like, of which thefollowing is a specification.

y invention relates to mechanism for supporting and tilting electricfurnaces, coming within the general invention disclosed in myapplicationfor patent for tilting mechanism for containers, such as furnaces, Ser.No. 261,670, filed November 8, 1918.

The purpose of my invention is to provide parallel arm support andtilting and at the ,same time 'free the front of the furnace as much asfrom.

A further purpose is to place parallelogram tilting mechanism back fromthe furnace spout and tilt it by mechanism conveniently located at thefront thereof.

further purpose is to remove the counterbalance for a furnace tiltingmechanism from the front of the furnace.

Further purposes will appear in the specipossible from interferencetherefication and in the claims.

- I prefer to explain my invention inconnection with butone general formthereof, selecting a form which has proved to be practical, eflicientand -thoroughly reliable well illustrates the principles of myinvention.

Figure 1' is a side elevation of a furnace tilting mechanism exhibitingmy invention.

Figure 2 is a front elevation partly sectioned, of the structure ofFigure 1.

Figure 3 is a fiew similar to Figure 1 showing the parts in pouringposition.

Figure 4 is a detached perspective view of the tilting levers and shafttherefor.

Figure 5 is a broken perspective of a guide shown in Figures 1, 2 and 3.

Figure 6 is a s1de elevation showing a slight modification of the samegeneral structure.

\ In the drawings similar-numerals indicate .like parts.

The furnace 1, b which I have illustrated my invention, is o the samegeneral type as the furnace of my Patent No. 1,201,671,

dated October 17, 1916, and comprises a body.

7, pouring spout 8, cover structure 9, transformer 10 and lower casing11 for a resistor secondary 12. At any suitable point on opposite sidesof the bodyI provide pairs of pins, 13, 13 and 15, 15 of which the pairg 13, 13 are desirably located approximately in line with an axis 14through the center of gravity of the operating furnace with a normalcharge, and '15, 15' center in a line 16 parallel to 14. That the linethrough the centers of pins 13, 13 should pass near the center ofgravity is not essential however, and in" Figure 6 I have-shown the pins13, 13' as, spaced to the right and pins 15, 15- as spaced to the left,respectively of a vertical line through the center of gravity of thefurnace, this figure being otherwise intended to illustrate the samestructure as shown in the other figures. V

The shifting mechanism comprises a parallelogram or lazy tongsarrangement shown most clearly in Figure 4 and in which the main weightof'the furnace, in the preferred figures,is taken by supports or bars17, 17 connecting with the pins 13, 13 and lifted by arms 18, 18' uponshaft 19. Q In this pre ferred form the tilting is accomplished by bars20, 20 which connect at the upper ends with pins 15, 15. In the form inFigure 6 the pairs of bars 17, 17' and 20, 20' divide the weight aboutequally and both take part about equally in the tilting of the furnaceas it is lifted.

The pairs of bars l7, l7 and 20, 20' are pivotally connected with thearms 18, 18 by pins 21, 21 and 22, 22' respectively, and the bars on thesame side of the furnace, 17 and 20 or 17 and 20 may be furtherconnected for stiffening purposes by straps 23, .23 through pins 24, 24and 25, 25 respectively. Whether the straps 23, 23 be used or not, myinvention contemplates providing pins upon or connected with the bars ofone pair either'17 and 17' or20 and 20.(and inthis case convenientlythepins 25) to cooperate with cam slots 26 in brackets 27 fixedlsupported close to the bars, whereby the ars of one pair at least arerestrained laterally and caused to follow substantially the same path asthey would follow if the straps 23 were projected to pivot about an axis28 through the intersections of the lines of straps 23, with thevertical lines 30 through the ends of shaft 19. In the best lines 29,the center,

line 29 is para Q eral form,"I 60 of all or a part of'm form of myinvention "the planes through line 30 and shaft 19, and the axes 14 and16, respectively, meet in a line passing approximately throu hthepouring spout and the llel with line 31 (through shaft 19' and pins21, 22) and line 31 (through axes 14and'16).

By using the cam guide instead of the actual extension of the straps 23to a pivot 28, I clear the space at the front of the furnace and givemore room for moulds or other mechanism, much simplifying the handlingof the product without losing desirable control over movement of thefur- Any guide which will maintain the bars 17, 17 and 20 insubstantially parallel (preferably vertical) positions dur- III theirmovements will serve the purpose.-

11 order that the furnace may be tilted to 2'9 advantage by a singleoperator and without danger of reversal as the wei ht in the furnace isreduced by pouring, tilt by a worm Wheel 33 upon shaft 19. The wormwheel is turned by a worm 34 and operated 26 through shaft 35, gearing36, and spindle 37 by a wheel 38.

ture in front of the furnace I shift the counterbalance from theposition shown in my above mentioned application, upon "an i extensionof the lever. arms 18 to the left beyond the shaft 19 and cause thecounter:

weights to lift the ends 39 of the arms 18,

forming the connection by 'clips 40 and cord 41 passing about pulley 42in hanger 43 to the weights 44;

Excessive downward movement of the furnace and of the lifting mechanismis restrained by blocks 45 upon which the arms.

or bars bottom. I

In operation the furnace is tilted through "the eounter-clockwiseturning of arms 18- 18 lifting the furnace throu h bars'17, 17

or through the combined li ing'efiort of these and arms 20', 20', theformer pair of,

which perform the chief lifting operation in the preferred form but mayassist .in the tilting and the latter pair of which tilts or asslsts intilting the furnace without or with effective assistance 'in thesupportof the furnace.

In the meantime the furnace is prevented the guiding ofone, cam guides26 and k the structure ,may be stiffened by straps frem side movement bpair of arms throught 'e 23; Counterweighting is effected by weightseach si 'on each side of the right position, forming para 'tems andcounterweightingjmechanism for n n nstallation. I am also aware that thebene fits of my invention are not limited to fur-- naces but that theinvention may be applied to other containers in great variety.

Having. thus described my invention, what I claim as new and desire tosecure by Letters Patent is w 1. In lifting and tilting mechanism forfurnaces, a furnace, a pair of parallel bars on each side of the furnaceand pivoted to it, connections therebetween to maintain arallelism withliftin movements of the ars, arms and mechanism connected therewith forlifting the bars and a cam guide and connections for maintaining thebars against lateral movement.

'2. In lifting mechanism for furnaces, a

furnace two pairs of parallel-bars, one on deof the furnace andpivotally connected at their ends to the furnace, in combination with aair of lifting and tilting lever armspivotal to form quadrilater'alswith the bars, furnace connections and arms, and a guide for each pairof bars, maintaining them against lateral movement throughout the normalpath of movement of,the bars. In order to avoid complication of struc 3.In lifting mechanism for furnaces, a

ly connected with the bars furnace, two pairs of ipuarallelvbars, onepair mace and pivotally connected therewith, two operating lever arms,one on each side, pivotally connected with the bars, movable guidemembers, one on each side of the furnace and carried by the bars, afixed guide member cooperating therewith to maintain the sulpports inupelogram systhe systems, comprising a flexible connection secured tothe systeln at one end, a.

pulley for the flexible connection anda counnection.

furnaces, a'furnace, a pair of parallelogram lifting and tilting systemson oppoSitesides counterweight upon the end of the flexible-'connection.

5. In alifting and tilt'ilg inechanismfor furnaces, a furnace, two pairsof parallel' bars, one air each located onopposite sides of the mace andpivotally connected therewith, a pair of lifting arms each pivoted atone'end to the'bars, mechanism connected with said bars to swing thesame, guides to maintain the bars in vertical position throughout theirmovement and counterweighting mechanism for the system connected tothearms at a distance from the pivots. i

6. In 'a lifting and tilting mechanism for furnaces, a'furnace, twopairs of'lifting and terwe'ight upon the end of the flexible con- 4. 'Ina lifting and tilting mechanism for tilting bars,. one pair on eachside'of the furnace and pivotally connected therewith, lifting arms forsaid bars pivotally connected therewith to maintain parallelism of thebars, pins connected one with a bar on each side of said furnace, afixed cam plate on each side guiding'said pins and counterweightingmechanism for the furnace.

7 In a lifting and tilting mechanism for furnaces, a furnace, two pairsof bars for lifting and tilting the furnace, one pair on each side ofthe furnace and pivotally connected therewith, lifting arms for saidbars, pivotally connected therewith to maintain parallelism of the bars,one bar of each pair being so pivoted as to lift practically in linewith the center of gravity of the furnace with a moderate pool, pinsconnected one with a bar on each side of said furnace, a fixed cam plateon each side guiding said pins and counterweighting' mechanism for thefurnace.

8. A parallelogram lifting and tilting mechanism for furnaces, a furnacecomprising a parallelogram mechanism on each side inscombination withcounterweighting mechanism operating directly upon the parallelogramsand lifting mechanism for the parallelo rams.

9. n a tilting mechanism for furnaces, a furnace, in combination withquadrilateral lifting and tilting mechanisms of which the. furnace formsone side of each, lever arms, one forming the side opposite to thefurnace side of each and extended beyond the quadrilateral forwardlytoward the l pouring spout to a pivot point substantially below thepouring spout, means for turnin the arms about their pivots, guides forthe bars of the quadrilateral whlch join the furnace and lifting arms,maintaining the arms in parallel positions and 'counterweightingmechanism for the weight of the-furnace. 10. In a tilting mechanism forfurnaces, a furnace, in combination with quadrilateral lifting andtilting mechanisms of which the furnace forms one side of each and leverarms form the sides opposite to the furnace side ofeach, the arms beingextended beyond the quadrilateral forwardly toward the pouring spout toa pivot point located substantially below the pouring spout,.means forturning the arms about their pivots,

guides for the members of the quadrilaterals joining the furnace andlifting members, maintaining the arms inparallel positions,

'a flexible connection to each of the arms, a;

P the furnace 'turning the arms about their pivots, guides for themembers joining the furnace and lifting arms, maintaining them inparallel positions, a counterweight, an idler and a flexible connectionfrom the counterweight passing over the idler and adapted to lift one ofthe arms.

12. A furnace, pairs of vertically disposed bars pivotally connected tothe furnace on opposite sides thereof, the common plane of their pivotspassing approximately through the ouring spout, arms at the op positeends of said bars, pivotally connected thereto and forming aparallelogram with connections, bars and arms, a pivotal support forsaid arms forward of the quadrilateral, and beneath the pouring spout,means for turning said arms to lift and tilt the furnace and cam guideconnection for one of the bars on each side, maintaining said bars insubstantially vertical position. 1

13. In a lifting and tilting mechanism for furnaces, a furnace, aparallelogram lifting and tilting mechanism upon each side of thefurnace and using the furnace as one member of eachparallelogram incombination with a cam guide upon each side to maintain theparallelogram against undue swinging movement. 4

14:. In a lifting and tilting mechanism for furnaces, a furnace, aparallelogram lifting and tilting mechanism upon each side of thefurnace, pins upon vertical members of the parallelogram and fixedguides"for the pins. 1

15. 'In a tilting mechanism for furnaces, a furnace, a pair ofarallelogram tilting mechanisms therefor a apted to tilt the fur naceapproximately about its pouring spout and having two members of eachparallelogram approximately vertical, in combina tion with a guide ateach side in proximity to one of the vertical members, supporting itagainst undue lateral movement.

JAMES R. WYATT.

